> For the complete documentation index, see [llms.txt](https://docs.snomed.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.snomed.org/snomed-ct-user-guides/simplex-user-guide/introduction/features.md). # Features Simplex provides a streamlined set of tools to help Members and Affiliates create and manage SNOMED CT extensions. Its features are focused on keeping the process simple, affordable, and standards-compliant, while still giving you the flexibility to tailor content to your local needs. *** ### Extension Management * Organize content into modules for maintenance and publication. * Add and update subsets, translations, maps, and concepts all in one place. * Manage your extension lifecycle from setup to release. *** ### Translations * Set up translation sets * Import existing translations into Simplex. * Publish SNOMED CT translations * Support local adoption by making SNOMED CT available in your preferred language. *** ### Subsets * Generate subsets from files that are not ready for publication. * Convert these into reference set files compatible with SNOMED CT. * Manage subsets directly within your extension for easier distribution. *** ### Simple Maps * Build simple maps between SNOMED CT and other code systems. * Add, update, and manage map members. * Ensure consistent and interoperable mapping across systems. *** ### Minimal-Modeled Concepts * Create new concepts with minimal modeling. * Add concepts to your extension without the overhead of full concept authoring tools. * Keep your extension lightweight while addressing local terminology gaps. *** ### Quality Assurance * Services to help validate and review extension content. * Ensure your release meets SNOMED CT standards. *** ### Release * Package and release your extension as a SNOMED CT Edition. * Publish updates that include both your extension content and the latest International Edition. Provide Feedback --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.snomed.org/snomed-ct-user-guides/simplex-user-guide/introduction/features.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.